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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2013-06-24 10:30:41 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-06-26 21:10:28 +0200
commitf4eae94f71372ea5ec1ba17a85f3aebedc516ca8 (patch)
treeec3d6a527bf276a92e8befd559d9a0f0866ab7bd /arch/s390/include/asm/airq.h
parent386aa051fb4b6298c23996e68b7c92f186e484b6 (diff)
s390/airq: simplify adapter interrupt code
There are three users of adapter interrupts: AP, QDIO and PCI. Each registers a single adapter interrupt with independent ISCs. Define a "struct airq" with the interrupt handler, a pointer and a mask for the local summary indicator and the ISC for the adapter interrupt source. Convert the indicator array with its fixed number of adapter interrupt sources per ISE to an array of hlists. This removes the limitation to 32 adapter interrupts per ISC and allows for arbitrary memory locations for the local summary indicator. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/airq.h')
-rw-r--r--arch/s390/include/asm/airq.h15
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/s390/include/asm/airq.h b/arch/s390/include/asm/airq.h
index 9819891ed7a2..4066cee0c2d2 100644
--- a/arch/s390/include/asm/airq.h
+++ b/arch/s390/include/asm/airq.h
@@ -9,9 +9,18 @@
#ifndef _ASM_S390_AIRQ_H
#define _ASM_S390_AIRQ_H
-typedef void (*adapter_int_handler_t)(void *, void *);
+struct airq_struct {
+ struct hlist_node list; /* Handler queueing. */
+ void (*handler)(struct airq_struct *); /* Thin-interrupt handler */
+ u8 *lsi_ptr; /* Local-Summary-Indicator pointer */
+ u8 lsi_mask; /* Local-Summary-Indicator mask */
+ u8 isc; /* Interrupt-subclass */
+ u8 flags;
+};
-void *s390_register_adapter_interrupt(adapter_int_handler_t, void *, u8);
-void s390_unregister_adapter_interrupt(void *, u8);
+#define AIRQ_PTR_ALLOCATED 0x01
+
+int register_adapter_interrupt(struct airq_struct *airq);
+void unregister_adapter_interrupt(struct airq_struct *airq);
#endif /* _ASM_S390_AIRQ_H */

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